If the speed of the cart at the first photogate is 2.3 m/s, and the speed of the cart at the first photogate is 1.8 m/s, what is the percentage change in the speed of the cart (LEAVE OUT the % symbol)?
To calculate the percentage change in the speed of the cart, you can use the following formula:
Percentage Change = ((New Value - Old Value) / Old Value) * 100
In this case, the old value would be the speed of the cart at the first photogate (2.3 m/s) and the new value would be the speed of the cart at the second photogate (1.8 m/s). Plugging these values into the formula, we get:
Percentage Change = ((1.8 m/s - 2.3 m/s) / 2.3 m/s) * 100
Simplifying further:
Percentage Change = (-0.5 m/s / 2.3 m/s) * 100
Percentage Change ≈ -21.74
So, the percentage change in the speed of the cart is approximately -21.74 (without the % symbol).
To find the percentage change in speed, we need to calculate the difference in speeds and then divide it by the initial speed. Here are the steps to get the percentage change in speed:
Step 1: Subtract the final speed from the initial speed.
Initial speed = 2.3 m/s
Final speed = 1.8 m/s
Difference in speeds = Initial speed - Final speed
Difference in speeds = 2.3 m/s - 1.8 m/s
Difference in speeds = 0.5 m/s
Step 2: Divide the difference in speeds by the initial speed.
Percentage change in speed = (Difference in speeds / Initial speed) * 100%
Percentage change in speed = (0.5 m/s / 2.3 m/s) * 100%
Step 3: Calculate the percentage.
Percentage change in speed = (0.2174) * 100%
Therefore, the percentage change in the speed of the cart is approximately 21.74%.